Welded joint



', May 1, 1923.

- J. w. FAY

WELDED JOINT Filed Dec. 19, 1921 WITNESSES I MVEN R" 7% I .W 0%

ATTOQNEY Patented May '1, 1923..

UNITED STATES PATENT OFFICE.

JOSEPH FAY, OF MILWAUKEE, WISCONSIN, ASSIGNOE T FRED PABS'I. COMPANY,

A. CORPORATION 013' WISCONSIH.

wanna!) 301m.

Application filed. December 19, 1921. Serial No. {23,559.

To all whom it may concern:

Be it known that I, J osnrn W. FAY, a citizen'of the United States,residing at Milwaukee, in the county ,of.. Milwaukee and State ofWisconsin, have invented certain new and useful Improvements in WeldedJoints, of which the following is a specification.

The invention relates to an electrically welded joint and method ofmaking the same.

This invention is designed to provide a reenforced joint between twoplates or other members which are welded together by a reenforcing stripof'fusible material to which the plates or other members are welded toform a joint, such strip including a. tongue portion and flangedportions serving to reenforce the joint against strains transversely ofand along the joint, and the invention further consists in welding thestrip to the members b drawing the arc between the fusible metallicelectrode and the tongue portion of the strip, such method enabling theoperator to turn out'a large amount of work in a relativelyshort time.'

The invention further consists in the several features hereinafterset'forth and more particularly defined by claims at the conclusionhereof.

In the drawings: Fig. 1 is avperspective view of a joint embodying theinvention, with the parts in position before welding; Fig. 2 is aperspective view showing the joint in the process of welding.

In the drawingsthe numerals 3 and 4 designate the plates or othermembers to be welded together, and 5 a reenforcing strip, capable ofbeing fused by the arc, to which the. edges of the lates 3 and 4'arewelded by forming a we (1 between said strip and each of the adjoiningedges of the plates 3 and ies clearly shown in Fig. 2;

This reenforcing stri is preferably of a T-sha d sectionprovi in a.tongue 6 and shoul ers 7, the edges of t e members to be welded abuttinga ainst the sides of the tongue and oneof t e sides ,of said membersadjacent the edge abutting one of the shoulders 7. It will be noted thatthis permits the strip to act as a temporary gauge for the plates which,of course,nlust be held by other means in a fixed position during thewelding operation. The tongiiemay be of a height to extend to apointbelow, flush with,

plates or slightly above the surface of the or other members to be.welded. The

drawing shows the tongue extending slightly belou the upper surface ofthe plates, and

th welding material 8 is deposited over the top of the tongue and theupper surfaces of the plates at the joint and fuses with said strip andthe edges of the plates to form the integrally welded joint. I havefound that'by drawing the are between the fusible of the jacent-metallic electrode 9 and the upper portion tongue of the strip and theplates adthereto that th heat of the arc will readily penetrate thestrip and the adjacent edges of the plate so that a quick and eflicientweld can be made. The reenforcing strip being of greater depth than thethickness of the plates obviously reenforces the joint againstlengthwise strains, and the flanged extens ions forming the shoulders 7also reenforce the joint against transverse strains.

The

reenforcing strip may be of any length required, and also the tongueportion which fits between the parts tobe welded can be of any height orthickness desired.

drawing the arc between the electrode and the tongue portion of thestrip a good weld is assured, as the tongue portion-does not interferewith the proper transfer of metal directly to the joint between it andthe plates.

What I claim as my invention is:

The

herein described method of joining sheet metal parts which comprisespositioning the edges of the sheet metal upon the face 0 f a backing barhaving relatively low spacing projections, directing an are against theface of the bar between the projections to fuse the edges of the sheetmetal and the projections, to unite the sheet metal to the backing barandto fill the groove between the ed metal.

gas of the sheet metalwith additional JOSEPH w. FAY.

